Umar Sabhapathy. Examine Strength On Concrete By Partial Replacement Of Coarse Aggregate By River Pebbles And Fine Aggregate By Quarry Dust. International Innovative Research Journal of Engineering and Technology [Internet]. 2022 Jun. 10 [cited 2024 Jul. 3];2(4). Available from: https://iirjet.org/index.php/home/article/view/178